4
Quake mode terminal
(bolha.forum)
The GNOME Project is a free and open source desktop and computing platform for open platforms like Linux that strives to be an easy and elegant way to use your computer. GNOME software is developed openly and ethically by both individual contributors and corporate partners, and is distributed under the GNU General Public License.
It's maintained on GitHub, so you might be able to manually install it or find a package for it in your package manager. At least on Arch you can install
gnome-shell-extension-ddterm-git
from the AUR.